Should MLB umpires really be wearing advertisements?

In 1973, new fashion for baseball umpires was strictly a judgment call - The Boston Globe

MLB, umpires agree on deal that would allow for computerized ball-strike system – The Denver Post

Oakland A's news: First of 2023 MLB uniform ads unveiled - Athletics Nation

Porter, Johnson become MLB's 2nd, 3rd Black ump crew chiefs - The San Diego Union-Tribune

World Series umpire salaries: How much do MLB umpires get paid for 2022 World Series games?

Codify] MLB umpires missed over 21,000 balls & strikes calls during the 2023 regular season. It was their best season ever. : r/baseball

Beyond the grunt: Umpires mic up, and baseball changes a bit

MLB Umps Wear White Wristbands to Protest Increased Verbal Attacks by Players, News, Scores, Highlights, Stats, and Rumors

Center Field on Fire: An Umpire's Life with Pine tar Bats, Spitballs, and Corked Personalities: 9781572435698: Phillips, Dave, Rains, Rob, Costas, Bob: Books

Who are the umpires calling the Rangers-Astros ALCS series?

Rookie MLB umpire Malachi Moore knows about dealing with pressure - Los Angeles Times

What other sports could learn from Nascar about advertising